公开(公告)号：US07133370B2

公开(公告)日：2006-11-07

申请号：US10096782

申请日：2002-03-13

申请人： Kazuya Ikeda ,  Katsuichi Ohara ,  Masanobu Miyamoto

发明人： Kazuya Ikeda ,  Katsuichi Ohara ,  Masanobu Miyamoto

IPC分类号： H04L12/28

CPC分类号： H04L41/12

摘要： A network topology collection device determining a network topology which indicates a connection state of a route prepares opposed topology information which indicates the connection state between a collection node to which the network topology collection device itself belongs and opposed nodes which respectively terminate routes terminated by the collection node, collects opposed topology information of a node directly or indirectly routed to the collection node, and determines a topology of an entire network based on the opposed topology information collected. Also, in a hierarchized route, the collection device determines a network topology of a route in a specific hierarchy based on opposed topology information in the hierarchy and opposed topology information of a route in another hierarchy.

公开(公告)号：US5523703A

公开(公告)日：1996-06-04

申请号：US298047

申请日：1994-08-30

申请人： Kanta Yamamoto ,  Katsuichi Ohara

发明人： Kanta Yamamoto ,  Katsuichi Ohara

IPC分类号： H03K19/086 ,  G06F12/00 ,  G06F13/16 ,  G11C11/401 ,  H03K19/0175 ,  H04B3/02 ,  H04L5/14 ,  H04L12/40 ,  H04L25/02 ,  H03K17/16

CPC分类号： H04L12/40039 ,  H04L12/407 ,  H04L25/0298 ,  H04L5/14

摘要： A method of controlling termination of current driven circuits that bidirectionally transmit and receive a current driven signal, has the step of transmitting the current driven signal from a first one of the current driven circuits and receiving the signal by a second one of at least one of the current driven circuits while connecting only a termination circuit on the receiver side and disconnecting the other termination circuits. Therefore, the method of controlling termination of current driven circuits carries out simple termination switching control to prevent a decrease in the impedance of the output stage of the current driven circuit and transmit the current driven signal at correct amplitude.

摘要翻译： 控制双向传输和接收电流驱动信号的电流驱动电路的终止的方法具有从当前驱动电路中的第一个驱动电路传输当前驱动信号并通过以下至少一个接收信号的步骤： 电流驱动电路，同时仅连接接收器侧的终端电路，并断开其他终端电路。 因此，控制电流驱动电路的终止的方法进行简单的终止切换控制，以防止电流驱动电路的输出级的阻抗减小，并以正确的幅度传输电流驱动信号。

公开(公告)号：US07342946B2

公开(公告)日：2008-03-11

申请号：US10073570

申请日：2002-02-11

申请人： Akira Okawa ,  Toshio Kanayama ,  Toshiaki Hayashi ,  Kouji Mizumoto ,  Hiroyuki Fukushima ,  Katsuichi Ohara

发明人： Akira Okawa ,  Toshio Kanayama ,  Toshiaki Hayashi ,  Kouji Mizumoto ,  Hiroyuki Fukushima ,  Katsuichi Ohara

IPC分类号： H04J3/04 ,  H04J3/16

CPC分类号： H04J3/047

摘要： In a device for processing data signals, a storing part stores an input signal and the data signals included in the input signal are extracted from the storing part and the data signals are output at a desired output speed. Then, the data signal is output based on storage information of the input signal.

摘要翻译： 在用于处理数据信号的装置中，存储部分存储输入信号，并且从存储部分提取包括在输入信号中的数据信号，并且以期望的输出速度输出数据信号。 然后，基于输入信号的存储信息输出数据信号。

公开(公告)号：US6009076A

公开(公告)日：1999-12-28

申请号：US593567

申请日：1996-01-30

申请人： Kazuo Takatsu ,  Katsuichi Ohara ,  Kanta Yamamoto ,  Yoshinori Nakamura ,  Toshihito Echizenya

发明人： Kazuo Takatsu ,  Katsuichi Ohara ,  Kanta Yamamoto ,  Yoshinori Nakamura ,  Toshihito Echizenya

IPC分类号： H04B3/36 ,  H04B10/032 ,  H04B10/077 ,  H04B10/29 ,  H04J3/00 ,  H04J3/08 ,  H04Q11/04 ,  H04J1/16

CPC分类号： H04J3/08 ,  H04J2203/0042 ,  H04J2203/006

摘要： A communications system has two transmission circuits, each transmitting a multiplexed signal in both ways. A repeating installation used therein selects either one of the two transmission circuits and terminates management information contained in a signal which flows through a transmission circuit selected by the selecting unit. The repeating installation sets the other non-selected transmission circuit to be in a high impedance state. The selection and termination are commonly performed for the two transmission circuits, and the repeating installation further extracts the management information transmitted and outputs the management information to be outputted. The management information includes a section overhead having management information concerning a repeating section of the communications system, and the repeating installation does not terminate management information concerning a multiplex section. One of the two transmission circuits includes a spare transmission circuit.

摘要翻译： 通信系统具有两个发送电路，每个发送电路以两种方式发送多路复用的信号。 其中使用的重复安装选择两个发送电路中的任一个，并且终止包含在流经选择单元所选择的发送电路的信号中的管理信息。 重复安装将其他未选择的传输电路设置为处于高阻抗状态。 通常对两个发送电路执行选择和终止，并且重复安装进一步提取发送的管理信息，并输出要输出的管理信息。 管理信息包括具有关于通信系统的重复部分的管理信息的部分开销，并且重复安装不终止关于多路复用部分的管理信息。 两个发送电路之一包括备用发送电路。

公开(公告)号：US06314097B1

公开(公告)日：2001-11-06

申请号：US08908064

申请日：1997-08-11

申请人： Katsuichi Ohara

发明人： Katsuichi Ohara

IPC分类号： H04J312

CPC分类号： H04Q11/0478 ,  H04J3/085 ,  H04L2012/5649 ,  H04L2012/5672

摘要： A transmission device to which transmission lines over which signals including overhead information are transferred, includes a first part which gathers and transfers the overhead information of the signals transferred over the transmission lines to a second part, and the second part which terminates the overhead information of the signals.

摘要翻译： 传输包括开销信息的信号的传输线的传输装置包括：第一部分，其将通过传输线传送的信号的开销信息收集并传送到第二部分;第二部分终止第 信号。

公开(公告)号：US5495472A

公开(公告)日：1996-02-27

申请号：US215378

申请日：1994-03-21

申请人： Katsuichi Ohara

发明人： Katsuichi Ohara

IPC分类号： H04J3/08 ,  H04L12/437 ,  H04Q11/04 ,  H04L1/22

CPC分类号： H04L12/437 ,  H04J3/085 ,  H04Q11/04 ,  H04J2203/0042 ,  H04J2203/006

摘要： A path select switching unit is installed in network elements that are interconnected to make up a ring network. A path select switching unit has a path protection switched ring mode in which a first cross-connect uses a working path and a protection path which are counter-rotating paths set up on a line in the network. A re-use mode is also provided in which a second cross-connect is adapted for re-use of the protection path as a second working path for a different signal on that line. The path select switching unit in each network element detects a failure in the working path and, when a failure occurs, switches from the second cross-connect to the first cross-connect so as to force the path protection switched ring mode to be established, allowing data transmission over the protection path on the line.

摘要翻译： 路径选择切换单元安装在互连以组成环网的网元中。 路径选择切换单元具有路径保护切换环模式，其中第一交叉连接使用在网络中的线路上建立的反向旋转路径的工作路径和保护路径。 还提供了再使用模式，其中第二交叉连接适于重新使用保护路径作为用于该线路上的不同信号的第二工作路径。 每个网元中的路径选择切换单元检测工作路径中的故障，发生故障时，从第二交叉连接切换到第一交叉连接，以强制建立路径保护切换环模式， 允许通过线路上的保护路径进行数据传输。

公开(公告)号：US07398018B2

公开(公告)日：2008-07-08

申请号：US10268184

申请日：2002-10-10

申请人： Katsuichi Ohara

发明人： Katsuichi Ohara

IPC分类号： H04B10/00

CPC分类号： H04B10/032 ,  H04J14/0201 ,  H04J14/0283 ,  H04J14/0295 ,  H04J14/0297

摘要： An optical transmission equipment having a switchover control function of optical transmission lines enables to reduce a required space in a common equipment supervision and control portion. The optical transmission equipment includes a pair of a work interface unit and a protection interface unit each accommodating an optical transmission line, and an add drop multiplexing unit for selecting an optical signal output from either of the interface unit pair. Each interface unit includes a switchover controller, and each of the interface unit pair is mutually connected via a communication path so as to share status information among the switchover controllers. Upon a failure in the work interface unit side of the interface unit pair, the failure is reported to the protection interface unit side prepared as an object for switchover, to send a switchover request from the protection interface unit side to the add drop multiplexing unit.

摘要翻译： 具有光传输线的切换控制功能的光传输设备能够减少通用设备监视和控制部分中所需的空间。 光传输设备包括一对工作接口单元和每个容纳光传输线的保护接口单元，以及一个用于选择从任一个接口单元对输出的光信号的分插复用单元。 每个接口单元包括切换控制器，并且每个接口单元对经由通信路径相互连接，以便在切换控制器之间共享状态信息。 在接口单元对的工作接口单元侧发生故障时，将故障报告给作为切换对象准备的保护接口单元侧，从保护接口单元侧向加法分支复用单元发送切换请求。

公开(公告)号：US06321284B1

公开(公告)日：2001-11-20

申请号：US09268426

申请日：1999-03-12

申请人： Akio Shinohara ,  Hideo Abe ,  Katsuichi Ohara

发明人： Akio Shinohara ,  Hideo Abe ,  Katsuichi Ohara

IPC分类号： G06F1336

CPC分类号： G06F13/1605 ,  G06F13/1663

摘要： A data processing system having one or more processor modules and a plurality of shared memory busses to increase its total system performance. Processor modules send bus requests to a bus arbiter, when they attempt to make access to shared memories or memory-mapped peripheral control modules. When such memory access requests are received, the bus arbiter checks the availability of each bus that will be used to reach the requested memories, and send bus grant signals to the requesting processor modules after resolving conflicts, if any. Since the system provides separate paths to reach the individual shared memories, two or more processor modules can be granted their access requests at the same time.

摘要翻译： 具有一个或多个处理器模块和多个共享存储器总线的数据处理系统，以增加其总系统性能。 处理器模块在总线仲裁器尝试访问共享存储器或内存映射外设控制模块时，将总线请求发送到总线仲裁器。 当接收到这样的存储器访问请求时，总线仲裁器检查将用于到达所请求的存储器的每个总线的可用性，并且在解决冲突（如果有的话）之后向发出请求的处理器模块发送总线授权信号。 由于系统提供单独的路径以到达各个共享存储器，因此可以同时授予两个或多个处理器模块的访问请求。

公开(公告)号：US5731639A

公开(公告)日：1998-03-24

申请号：US210042

申请日：1994-03-17

申请人： Katsuichi Ohara ,  Kanta Yamamoto

发明人： Katsuichi Ohara ,  Kanta Yamamoto

IPC分类号： H02J1/00 ,  H05K7/14

CPC分类号： H02J1/00 ,  Y10T307/461 ,  Y10T307/484

摘要： An apparatus for connecting power sources to a plug-in unit has a plug-in connector and a plurality of connection control circuits. Terminal pins of the plug-in connector are connected simultaneously to a negative power source, a GND and a positive power source. When the negative power source and the GND are connected, a first connection control circuit is turned ON and connects the negative power source to a first load circuit. A second connection control circuit is turned on in response to an input from the negative power source supplied to the first load circuit, and supplies a GND signal to a third connection control circuit. The third connection control circuit is turned ON when the GND signal is supplied to the positive power source, and connects the positive power source to a second load circuit.

摘要翻译： 用于将电源连接到插入式单元的装置具有插入式连接器和多个连接控制电路。 插入式连接器的端子引脚同时连接到负电源，GND和正电源。 当连接负电源和GND时，第一连接控制电路接通，并将负电源连接到第一负载电路。 第二连接控制电路响应于来自提供给第一负载电路的负电源的输入而导通，并且将GND信号提供给第三连接控制电路。 当GND信号被提供给正电源时，第三连接控制电路接通，并将正电源连接到第二负载电路。

公开(公告)号：US5189410A

公开(公告)日：1993-02-23

申请号：US635439

申请日：1990-12-28

申请人： Toru Kosugi ,  Yuichi Hashimoto ,  Masayuki Tanaka ,  Katsuichi Ohara ,  Takahiro Furukawa ,  Makoto Aoki

发明人： Toru Kosugi ,  Yuichi Hashimoto ,  Masayuki Tanaka ,  Katsuichi Ohara ,  Takahiro Furukawa ,  Makoto Aoki

IPC分类号： H04J3/16 ,  H04Q11/04

CPC分类号： H04J3/1611 ,  H04Q11/04 ,  Y10S370/907

摘要： A digital cross connect system includes reception interface parts for converting an input line signal into a VT signal having a VT frame format in conformance with synchronous optical network (SONET) standards, a switching part for cross connecting the VT signal received from the reception interface parts, and transmission interface parts for converting the cross connected VT signal received from the switching parts into a line signal. The reception interface part inserts a frame synchronizing signal within a reserved path overhead part of the VT signal, and the transmission interface part achieves frame synchronization of the VT signal in response to the frame synchronizing signal.

摘要翻译： 数字交叉连接系统包括用于将输入线信号转换为具有符合同步光网络（SONET）标准的VT帧格式的VT信号的接收接口部分，用于将从接收接口部分接收的VT信号交叉连接的切换部分 以及用于将从开关部分接收的交叉连接的VT信号转换为线路信号的传输接口部分。 接收接口部分在VT信号的保留路径开销部分内插入帧同步信号，并且传输接口部分响应于帧同步信号实现VT信号的帧同步。